What do you do when it's someone's birthday?
I sometimes say "happy birthday" to my friends on social media but I never send birthday card - they're very expensive. Noah, 12
I send my friends a "happy birthday" text message with a smiley emoticon in it. Alice, 14
My sister and I always call our grandmother on the landline when it's her birthday. She hasn't got a mobile phone. We sometimes write a long letter to her, too, and send it to her by post. Daniella, 15
I've got a lot of family in India. When it's my cousin's birthday, I usually video chat with him. We sometimes use instant messaging, too. Arjun, 13